Solution Found!

Thermodynamics: An Engineering Approach | 8th Edition | ISBN: 9780073398174 | Authors: Yunus A. Cengel, Michael A. Boles
Change Question

A house has an electric heating system that consists of a

Chapter 5, Problem 103P

(choose chapter or problem)

Get Unlimited Answers
QUESTION:

Problem 103P

A house has an electric heating system that consists of a 300-W fan and an electric resistance heating element placed in a duct. Air flows steadily through the duct at a rate of 0.6 kg/s and experiences a temperature rise of 7°C. The rate of heat loss from the air in the duct is estimated to be 300 W. Determine the power rating of the electric resistance heating element.

Questions & Answers

QUESTION:

Problem 103P

A house has an electric heating system that consists of a 300-W fan and an electric resistance heating element placed in a duct. Air flows steadily through the duct at a rate of 0.6 kg/s and experiences a temperature rise of 7°C. The rate of heat loss from the air in the duct is estimated to be 300 W. Determine the power rating of the electric resistance heating element.

ANSWER:

Step by step solution Step 1 of 5The work input to the fan is given as:Negative sign indicates that work is done on the system .The mass flow rate of air in the duct is:The rise in temperature of the air in the duct is:The amount of heat lost to the surroundings is:

Add to cart

Study Tools You Might Need

Chapter: 1 Problem: 1.1

Microbiology: An Introduction 11
How are bacteria, archaea, fungi, protozoa, algae, and viruses distinguished on the basis of cellular structure?

Chapter: 0 Problem: 7

Living by Chemistry 2
Consider the molecules C2H2, N2H2, and H2O2. a. Draw a Lewis dot structure for each one. What pattern do you notice? b. What can you do to check that your Lewis dot structures are correct? Name at least two ways.

Chapter: 9 Problem: 9.45

Organic Chemistry 6
Give the products expected when isopentyl bromide (1-bromo-3-methylbutane) or the other substances indicated react with the following reagents. (a) KI in aqueous acetone (b) KOH in aqueous ethanol (c) K+ (CH3)3CO in (CH3)3COH (d) product of part (c) 1 HBr (e) CsF in N,N-dimethylformamide (a polar apr

Chapter: 3 Problem: 1

Essentials of Understanding Psychology 11
Match each of the following organizational laws with its meaning: a. closure b. proximity c. similarity d. simplicity 1. Elements close together are grouped together. 2. Patterns are perceived in the most basic, direct manner possible. 3. Groupings are made in terms of complete figures. 4. Elements s

Chapter: 13 Problem: 1

Introduction to Psychology: Gateways to Mind and Behavior 13
Exercise, meditation, and progressive relaxation are considered effective ways of countering negative self-statements. T or F?

Chapter: 8 Problem: 12

Biology: The Dynamic Science 5
About 200 years ago, Jan Baptista van Helmont tried to determine the source of raw materials for plant growth. To do so, he planted a young tree weighing 5 pounds in a barrel filled with 200 pounds of soil. He watered the tree regularly. After 5 years, he again weighed the tree and the soil. At the s

Chapter: 36 Problem: 10

Principles of Economics 9
Other things equal, when the government runs a large budget deficit, it _________ national saving and thereby _________ capital formation and productivity growth. a. increases; increases b. increases; decreases c. decreases; increases d. decreases; decreases

Chapter: 12 Problem: 38

Biochemistry 9
Suggest a possible conclusion from the fact that peptidyl transferase is one of the most conserved sequences in all of biology.

Not The Solution You Need? Search for Your Answer Here:

×

Login

Login or Sign up for access to all of our study tools and educational content!

Forgot password?
Register Now

×

Register

Sign up for access to all content on our site!

Or login if you already have an account

×

Reset password

If you have an active account we’ll send you an e-mail for password recovery

Or login if you have your password back